EP 0496733 B1 19950816 - IMPROVED NOZZLE FOR A PLASMA ARC TORCH.
Title (en)
IMPROVED NOZZLE FOR A PLASMA ARC TORCH.
Title (de)
VERBESSERTE DÜSE FÜR PLASMALICHTBOGENBRENNER.
Title (fr)
AJUTAGE PERFECTIONNE POUR TORCHE A ARC DE PLASMA.
Publication
Application
Priority
- US 9004112 W 19900720
- US 42467589 A 19891020
Abstract (en)
[origin: WO9105629A1] A plasma arc torch mounts an electrode (14) and a nozzle (12) with a mutual spacing, symmetrically about a common longitudinal axis (40) at one end of the torch (10) adjacent a workpiece. The inner surface (26) of the nozzle (12) has an annular, inwardly-directed projection (28) located opposite the electrode (14) and at a point of closest spacing between the electrode (14) and the nozzle (12). The projection, or "angle kink" (28), is characterized by a minimum radius of curvature as compared to the radii of curvature of adjacent portions of the nozzle (12) opposite said electrode (14). The inner surface (26) is adjacent a central exit passage (44) of the nozzle (12) and the angle kink (28) is spaced from the intersection of the exit port (44) and the inner nozzle (26). In the preferred form the interior nozzle surface (26) is formed by two conical surfaces each having different slopes with respect to the longitudinal axis (40) so as to form the circumferentially extending angle kink (28) at their plane of intersection.
IPC 1-7
IPC 8 full level
B23K 10/00 (2006.01); H05H 1/34 (2006.01); H05H 1/30 (2006.01)
CPC (source: EP US)
H05H 1/34 (2013.01 - EP US); H05H 1/3478 (2021.05 - EP); H05H 1/30 (2013.01 - EP)
Designated contracting state (EPC)
CH DE FR GB IT LI SE
DOCDB simple family (publication)
WO 9105629 A1 19910502; AU 6058290 A 19910516; AU 628617 B2 19920917; CA 2065431 A1 19910421; CA 2065431 C 19951205; DE 69021736 D1 19950921; DE 69021736 T2 19960425; EP 0496733 A1 19920805; EP 0496733 A4 19920603; EP 0496733 B1 19950816; JP H05502189 A 19930422
DOCDB simple family (application)
US 9004112 W 19900720; AU 6058290 A 19900720; CA 2065431 A 19900720; DE 69021736 T 19900720; EP 90911719 A 19900720; JP 51108790 A 19900720